Move pages to public dir

Update public/index.html, public/codemeta.css, public/cypress.json, public/main.css, public/js/validation/index.js, public/js/validation/primitives.js, public/js/validation/things.js, public/js/codemeta_generation.js, public/js/dynamic_form.js, public/js/fields_data.js, public/js/utils.js, public/data/spdx/LICENSE, public/data/spdx/licenses.json, public/cypress/integration/basics.js, public/cypress/integration/persons.js, public/cypress/integration/special_fields.js, public/cypress/integration/validation.js, public/cypress/support/index.js files Deleted .travis.yml